Molding machine



E. o. BEARDSLEY AND w. F. PIPER.

MOLDING MACHINE. yAPPLICATION FILED MAR-14,1921l 3 SHEETS-SHEET l.

E. 0. BEABDSLEY lAND W. F. PIPER.

Momma MACHINE; APPLICTIONv FILED MAR. 14| 192i Patented Mar47, 19224.

s SHEETS-#SHEET 2.

'ma/11% alaaf/0%@ E.. 0. BEARDSLEY AND WA. F. PIP-ER.

MOLDlNG MACHINE.

. UNITED STATI-:s

.PATENT OFFICE..

ELMER 0. BEARDSLEY, 0F CHICAGO, AND WALTER F. PIPER, 0F OAK PARK, ILLINOIS,

ASSIGNoRs 'ro 'MIE BEARDSLEY roRATIoN or ILLINOIS.

a PIPER COMPANY, or CHICAGO, ILLINoIs, A con,

MCLDING MACHINE l To all whom t may concern:

Be it known that we, ELMnR O. BEARosLEr and WALTER F. PIPER, both citizens of the United States,and residents of Chicago, in the countyof Cook and State of Illinois, and @ak Park, in the county'of Cook and State of Illinois, respectively, have invented certain newand useful Improvements in Molding Machines, of which the following is a full, clear, and exact description.

The invention relates to molding machines and more particularly' to those of the projector type.

The objects of the invention are: to provide an improved mount for the rotor of a sand projector to lessen the vibration resulting from high speed rotation incident to san projection; to provide. improved means for operatinga vibratory sand conveyor and riddle -by which vibration of the support on which the conveyor is movably mounted Will be minimized; to provide improved driving mechanism for a feed-belt on one of the movable members of the projecto-r support; to improve the construction and operation of the machine set' forth in Letters Patent No. 1,309,833, dated July 15, 1919, and No. 1, 335,642, dated'March 30, 1920; and to provide an improved manner ofmounting and balancing the pivot-member of the machine which support the motor and the sand projector.

The invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

ln the drawings: Fig. 1 is a side elevation of a machine embodying the invention. Fig. 2 is a vertical transverse section through the gearing for driving the belt for delivering sand to the projector. Fig. 3 is an axial section through the-pivoted supporting arm. Fig. 4 is an end elevation of the mechanism for vibrating the combined conveyor and riddle, the case being shown in section. Fig. 5 is a section through the projector- .Fig. 6 is 'a detail of the gearing for drivingl the belt for conveying sand to the projector.

The invention is exemplified in a machine mounted on abase 10 on which is pivotally mounted to swing laterally a jib 11 which comprises a socket 12 suitably journalled on the standard 10, a tube 13 and a bearingsocket 14 at its outer end in which is pivotally mounted a stud 17 on a horizon- Specicationof Letters Patent.

Patented Mar. 7, 1922.

Application led Hatch 14, 1921. SerialNo. 452,068.

tally movable arm which supports the sandproje'ctor. This arm comprises a casing 15 secured by bolts 16 to a flange on the top of stud 17 which permits the arm to swing laterally relatively to the jib and a tube 18 which has its inner end secured in the casing ldand supports the projector at its outer en .'lfhe projector comprises a head 20 on which 1s secured a projector blade 21 with a 'cut-of blade 22 at one side and a casing 23,

having` an arcuate periphery which cooperates with the blade 21 in projecting the sand into a flask beneath the projector. A, yoke '24 secured on the tube18 supports the casing 1n fixed relation thereon. Sere-ws 25 secure the casing to the yoke.

An electric motor 26 is bolted to one end of 'the casing 15 and the shaft 27 of said motor extends` through casing 15 andtube 18 and projects beyond the outer end lof said tube.

head, the shaft 27. is extended, as `at 27', be-

yond the outer end of the tube 18 and a driving collar or member 33 is secured to .the outer end of said shaft by a key 34. Bolts 36 extend through the marginal portion of the collar and into the hub of head 20, to secure the collar tothe projector head so that the latter will be driven from the shaft 27. A plate 38, provided with packing rings 39, is bolted to the rotor-head 20 to retain the lubricant for the bearings 27 and 28 'in the space between the head and the tube or sleeve 18- This construction exemplifies one, in which anti-friction bearings are inter.

posed directly between the tubular arm and the hub of the rotor, disposed radially inward of the' impeller blade, so that the rotor will have a 'direct support within the plane of rotation of the impeller. This construc- Nuts 31 hold the tion, in practice, has been found to minimize the vibration. of the arm and the rotor, resulting from the high speed operation of the latter. By eliminating this vibratigj'l7 experienced cessive wear upon the parts affected thereby is eliminated.

The purpose in providing an arm and a jib to supportY the projector-head is to permit it to be moved horizontally to pack all portions of afiask. The mechanism for feeding sand to the projector-head comprises an inclined chute 40, which contains a, rlddle 6() and supported over the jlb 11, and an endless belt 41 supported over and movable with the supporting arm. The chute 40 delivers the sand'to a guide 42 which is supported by the supporting arm and guides the sand onto the belt 41. The latter delivers the sand through an open side 43 into the casing 23, to the rotor of the proJector. In practice, considerable difficulty has been exin the operation of these feeding from the vibration caused by the For the purone end devices vibratory conveyor andriddle. pose of minimizing this vibration,

` of the conveyor 40 'is pivoted by a bolt 44 to crumed, at

end of a lever 45 which" is ful- 46, in brackets 47 secured to the base of a bracket 48 which is secured to the top of the sleeve 1 2 of the arm 11.. An enclosing case 48' for this gearing is secured to the top of the bracket 48. rl`he other 'end of the chute is supported from the arm 11 by a resilient strip 49. A counterweight 50 depends from thefulcrum ofthe lever 45 and is disposed so that its force will be applied to hold the lever 45 in a vertical position and the upper the chiite 40 in a medial position between the extremes of its movement. In this manner, the resistance of the weight 50 is applied to cumulatively vincrease as the chuteswings to either side o f its medial position and so as to retard the chute as it a proaches the extremes of its movement. n arm 51 is formed on the lever 45 so that the latter will operate as a bell-crank. A link 52 connects the outer end of ami 51 and a Wrist-pin 53 on a gear 54 which is mounted on a shaft 55 held in a bearing.56 which is secured to the bracket 48. An electric-motor 57 is bolted to bearing 56 and its shaft is provided with apinion 58 which meshes with gear 54 to operate the wrist-pin 53 to oscillate lever 51, 45, Weight 50 and to vibra-te the chute. A counterweight 54 on gear 54 counterbalances the link 52 and its connections.V Link 52 and arm 51 form Aa connection by which the wrist-pin 53 operates the chute 40, so that the wrist-pin will cross its dead-center points while the chute is moving near the ends of its stroke. This construction has been found to be an important factor in eliminating most of the vibration of the supports caused by the vibratory chute. The inner or upper end of chute 40 is adapted to receive sand from a stationary chute or elevator, as well understood in the art, and a riddle 60 separates the fragments of castings or other ma` terial from the sand. This mechanism for verse s aft 63, which is `mounted in rollerv bearings 64 and 65; a pinion 66 fixed to shaft 63, an idler-gear 67 on a stud-shaft 68 and meshing with pinion 66; and a` gear`69 fixed to the hub 70 of a pulley 71, around which the belt 41 passes, and by which it is driven. through the pulley 71 and ,anti-friction roll- A stationary shaftl 72 extends ers 73 rotatably support pulley 71` from said A shaft. One of the bearings' 73 is mounted in a removable end 74 of the pulley 7l and packing 7 5 is provided in said pulley-end to prevent the escape of lubricant from the chamber in the pulley. A bracket 76, secured to the casing 15by-bolts 77, supports one end of the shaft 72. Bearings 64 and 65 for shaft 63, stud-shaft 68, the other end of shaft 72 are mounted in a gear-casing comprisingan inner section 78 which is lformed and securedto close one open side of the casing 15 and a cover-section 79 which is secured to section 78 by bolts 80. A cap 81 is secured to cover-section 79 by bolts 82 and is removable to provide access to an adjusting nut 83 for the bearings for the shaft 63. The hub 70 of pulley 71 extends through case-section 78 and packing rings 84 prevent leakage of lubricant between said section and said hub. Casing 15 is adapted to contain oil to lubricate the gearing and opening 86 is formed in the case-section 78so the oil will flow into the gearcase 78, 79. An oil splasher is formed on the pinion 664 to splash oil into the upper portion of said gear-case so that all of the gearing in the case will be lubricated. A space is formed between the hub 7 0 and the Shaft 72, so that some of the oil splashed into the. upper por-4 tion of the case will find its way into the pulley 71 to lubricate the bearings 73. Packings 75 and 84 prevent the escape of oil from the gearing. A space 18a is provided between the shaft 27 and tube 18 through which oil will be splashed and fed to thel bearings between the rotor and said tube.

The invention exemplifies gearing between the motor driven shaft27 and the con,

-it may be freely shi ted as desired by the operator and aids in Ieliminating vibration.

The invention is not to be understood as restricted to the details set forth, since these may be modified within the scope of the appended claims, without departing from the spirit and scope of the invention.

Having thus described the invention, what we Iclaim as newand desire to secure by Letters Patent, is:

1. In a molding machine, the combination of a support, a projector comprising a stator sustained by said support and a rotor having a projector blade rigidly secured thereon, al bearing for the rotor disposed inwardly of the zone of rotation of the blade, anda driving connection for the rotor.

2. In a molding machine, the combination of a support,'a projector comprising a stator sustained by said support and a rotor having a blade rigidly secured thereon for project'- ing sand from the stator, a shaft for the rotor, 'a bearing disposed inwardly of the zone of rotation of the blade on thel rotor,

. and a driving connection between the rotor and said shaft.

3. In a moldingm-achine, the combination of a tubular support, a projector comprising a stator carried by said support and a rotor for projecting sand from the stator, a shaft in said tubular support, a bearing disposed .inwardly of the zone of rotation of the blade on the rotor and between the rotor andthe tubular support, and a driving connection between rthe rotor and said shaft.

- 4. In a molding machine, the combination of a tubular support, a projector comprising shaft and the rotor.

a statoilcarried by said support and a rotor Y having a blade for projecting" sand from the stator,- a shaft in said tubular support, the

latter extending axially throu h the rotor, a bearin-g within'tlie rotor an between the rotor and the tubular support whereby' the rotor will be directly supported by said bearing, and a driving connection between-the 5. In a molding machine, the combination of a tubular support, a projector comprising -a stator carried by said support and a rotor having a blade for projecting sand from the stator, a shaft in said tubular support, the latter lextending axially through the rotor,

'65 a bearing within the rotor and between the 13 rotor and the tubular support whereb the rotor will be directly supported by said earing, the shaft extending beyond the end of the tubular support, and a driving connection between the projecting end of the shaft and the rotor..

6. In a molding machine, the combination` between the p rojecting end of t e shaft and the rotor.

7 The combination of a molding machine, means for ccnveying sand to said machine comprisin a vibratory chute, mechanism for operating said chute comprising a pivoted lever and counterbalancing means applied to the lever. l

y 8. The combination of a molding machine,

means for conveying sand to 'said machine` comprising a vibratoi'y chute, mechanism for operating said chute comprising a pivoted lever and a counterweight applied to the lever to moveop'positely to said chute.

9. The combination of a molding machine, means for conveying sand to said machine comprising a vibratory'i-,chutm mechanism for operating said chute comprising a pivoted lever aiid counterbalancing means for the chute rigid with the lever.

10. In a molding machine, the combina tion of a support,4 means carried by said support for discharging sand into a flask, means carried by said support for conveying sandte said discharge means comprising a vibratory chute, mechanism for operating said chute comprising a pivoted lever, an counterbalancin means for the chute.

11. In a mol ing machine, the combination of a support, means carried by said support for discharging sand into a ask, means also carried by s aid support for conveying sand to said discharge means com,- prising a `vibratory chute, mechanism for operating said chute comprising a pivoted lever and an eccentric connected to the lever, and counterbalancing means for said ec- 'centric connection.

12. In a molding machine, the combination of a su port, means carried by said ing sand to said discharge means comprisating said chute comprising a pivoted lever and an eccentric connected to'the lever, and a counterweight on the lever.

, The combination of a Amolding nia-- ,ing a vibratory chute, mechanism for operchine, means for conveying sand to said machine comprising a vibratory chute, and mechanism for operating said chute comprising a bell-crank lever connected to the chute, a link connected to said lever, a wrist-pin connected to the link and mechanism for operating said wrist-pin.

14. The combination of a 'molding machine, means for conveying sand to said machine comprising a vibratory chute, mechanism for operating said chute comprising a bell-crank lever pivoted to the chute, a link connected to said lever, a wristpin connected to the link and mechanism for operating said wrist-pin` and counterbalancing means applied to the lever.

l15. In a molding machine, the combina'- tion of a support, means carried by said support for discharging sand into a flask, means also carried by said support for conveying sand to said discharge means comprising a vibratory chute, and mechanism for operating said chute comprising a bellcrank lever, a link connected to sald lever, a wrist-pin connected to the link and mechanisrn for operating said wrist-pin andI a counterweight rigid with the lever.

16. In a molding machine, the combination of a projector, a movable support for the projector, an endless belt to feed sand' to the projector mounted on and movable with the support, a motor for driving the rotor mounted on the support, gearing between the motor and the belt, and means for enclosing said gearing.

17. In a moldingmachine, the combination of a projector, a movable support for the projector, an endless belt to feed sand to the projector mounted to move with the support, a motor for driving the rotor mounted on the support, gearing between the motor andthe belt, and a casey for enclosing said gearing and provided with means to lubricate the gearing from said case. I

18. In a molding machine, the combination of aprojector, a movable support for the projector, an endless4 belt to feed sand to the projector mounted on and movable with said support, a motor for driving the rotor mounted on the support, spur-gearing between themotor and the belt, and means for enclosing said gearing.

19. In a molding machine, the combination of a projector, a movable support for' the projector, an endless 4belt to feed sand to the projector mounted on and movable with the support, a motor for driving the rotor mounted on the support, a common shaft for` the motor and the rotor of the projector, and -mechanism for driving the belt from said Shaft comprisingl a pinion on said shaft and spur gearing driven by said pinion.

20. In a molding machine,- the combination of a projector, a movable support for the projector, an endless belt to feed sand to the projector mounted on and movable with said support, a motor for driving the rotor mounted on the support, a common shaft for the motorand the rotor of' theprojector, mechanism for driving the belt from said shaft comprising a pinion on said shaft and spur gearing driven by said pinion and a case enclosing said gearing.

21. In a molding machine, the combination of a movable support, a motor on said support, a projector comprising a rotor mounted on the support, a shaft between the projector and the motor, an endless belt mounted for delivering sand to the projector movable with the support, pulleys for the belt mounted on lthe support, gearing be- -tween the shaft and one of the pulleys for driving the belt, and a casing enclosing said gearing and provided with means to lubricate said gearing.

22. In a molding machine, the combination of a movable support,\a motor on said support, a projector comprising a rotor mounted on the support, a shaft between the projector and the motor, an endless belt mounted for delivering sand to the projector movable with the support, Vpulleys for the belt mounted on the support, gearing between the shaft and 'one of the pulleys for driving the belt, and a casing enclosing said .gearlng and provided with means to lubricate said gearing and one of said pulleys.

23. In a molding machine, the combination of a movable support, a motor on said support, a projector comprising a rotor mounted on the support, a shaft between the projector and the motor, an endless belt for delivering sand to the projector, pulleys for the belt mounted on the support, gearing between the shaft and one of the pulleys for driving the belt, and a casing adapted to contain lubricant and enclosing said gearing.

24. In a molding machine, the combinav tion of a movable support, a motor on saidsupport, a projector comprising a rotor mounted on the support, a shaft between the projector and the motor, `an endless belt for delivering sand to theprojector, pulleys for the belt mounted on the support, gearing between the shaft and one of the pulleys for driving the belt, and a casing adapted to contain lubricant and enclosing said gearing, and bearings for the driven pulley connected to receive lubricant from said casing.

25'. In a molding machine, the combination of a tubular support, a motor on said support, a projector comprising a rotor mounted on the support, a shaft in said support between the'projector and the motor, means for delivering sand to the projector,

gearing driven by the shaft for operating y said delivery means, and a casing adapted to contain lubricant and enclosing said gearing, .and a bearing for said shaft connected to receive lubricant, from theA casing.

26. In a molding machine, the combination of a movable tubular support, a motor on` said support, a projector comprisinga rotormounted on the outer end of the support, means for delivering sand to the projector, earing between the shaft and one of the pul eys'foroperating said means, a cas'-- -ing adapted to contain lubricant and enclosing said gearing, and a bearing for the rotor connected to the caslng so as 4to recelve lubrlcant therefrom.

27. In a lmolding machine, the combination of'a support, -a motor mounted at one end of the support, a sand projector driven by the motor mountedat the other end` of the support, a pivot for said support disposedl betweenpthe motor and the projector so that .the motor willcounterbalance the projector.

28. InaJ molding machine, the combinal tion of a support, a motor mounted at one end of the support, a sand projector driven by the motor mounted `at the other end of the support, delivery meansmounted on said support, gearing Adriven by the motor for extending through the tubular support, and a pivot for the support disposed between the motor and the projector so that the motor will counterbalan'ce the projector.

30. In a molding machine, .the combinaaof tion of a tubular support, a projector mountt ved on one end of the-support, a motor mounted at the other end of the support, a shaft between themotor and the projector extending through. the tubular support,

means mounted on and movable with the support for delivering sand to the rojector,`

gearing for operating said means rom said shaft, and a pivot for the support disposed between the motor and the projector so that` the motor will counterbalance the pro'ector.

ELMER O. BEARDSL Y. WALTER F. PIPER. 

